<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>Page Title</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" type="text/css" media="screen" href="css/demo.css" />
</head>
<body>
    <canvas id="panel" width="600" height="600"></canvas>
   	<button id="restBtn" class="btn">重置</button>
    <script src="js/wuziqi.js"></script>
</body>
</html>